As we gear up for the arrival of the Realme P4 this Thursday, the buzz among tech nerds is how it stacks up against the Redmi Note 15, which dropped earlier this year.
From YouTube reviews to Reddit posts to Weibo forums, these two phones have had everyone talking.
Both of them are placing huge stakes in the budget phone arena, giving us flagship-level AMOLED displays, massive batteries, solid processors, and high-resolution cameras, all at a mid-range price.
In anticipation of the Realme P4 going to market this week, we have dug deep into its features, offering all the answers you will need to decide on which one to buy.
Here is a comprehensive comparison of the Realme P4 and the Redmi Note 15.
Design and Display
Starting with design and display, the Realme P4 features a 6.77-inch HyperGlow AMOLED display with a 144Hz refresh rate, over 4500 nits, and HDR support. For a phone with a big battery, it is surprisingly light, weighing around 185 grams. It comes with IP66 water and dust resistance.
The Redmi Note 15 has a 6.77-inch AMOLED display with a 120Hz refresh rate and peak brightness of approximately, 3200 nits. It also includes water and dust resistance, though its slightly lower refresh rate and brightness make it a bit less dynamic for gaming or media consumption.

Performance and Software
Under the hood, the Realme P4 is powered by the MediaTek Dimensity 7400 Ultra chipset, built on a 4nm process. It comes with 6 GB or 8 GB of RAM and 128 GB or 256 GB of UFS 3.1 Storage, allowing for smooth multitasking, fast app launches, and solid gaming performance. Running Realme UI on Android 15, it delivers a clean, responsive software experience with promises of multiple years of updates.
The Redmi Note 15 uses the Qualcomm Snapdragon 6 Gen 3 processor, paired with 6 GB or 8 GB of RAM and 128 GB or 256 GB of UFS 2.2 storage. It runs Xiaomi’s HyperOS on Android 15 and provides a polished, customizable interface.

Camera
The Realme P4 uses a 50MP Sony primary sensor (LYT-600) with OIS, supported by a 50MP ultrawide lens. It also offers 4K 60fps video recording on both the front and rear — a rarity in this segment.
In contrast, the Redmi Note 15 sports a 108MP main sensor, an 8MP ultrawide lens, and a 20MP front camera. The high-resolution sensor allows for better digital zooming without losing detail.

Battery
Realme P4 comes with a massive 7,000mAh “Titan” battery while somehow maintaining a slim 7.6 mm profile. It supports 80W Ultra Charging, which can top up that massive cell in under an hour.
Redmi Note 15 houses a 5,520mAh battery and 45W charging. It also supports 18W wireless charging. While it provides enough endurance for most daily users, it cannot match the longevity or charging speed of the Realme P4, which makes the P4 a better choice for heavy users and gamers.
Final Verdict
At the end of the day, both phones are trending for good reasons. The Realme P4 is the better choice if you want top-tier mid-range performance, a smoother 144Hz display, and massive battery life with ultra-fast charging. The Redmi Note 15, on the other hand, comes with a superior camera system, practical features, and balanced day-to-day performance.

